21232461250 has 320 divisors, whose sum is σ = 54414581760. Its totient is φ = 5997600000.

The previous prime is 21232461233. The next prime is 21232461251. The reversal of 21232461250 is 5216423212.

It is not an unprimeable number, because it can be changed into a prime (21232461251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 88838631 + ... + 88838869.

It is an arithmetic number, because the mean of its divisors is an integer number (170045568).

Almost surely, 2^21232461250 is an apocalyptic number.

21232461250 is an abundant number, since it is smaller than the sum of its proper divisors (33182120510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232461250 is a wasteful number, since it uses less digits than its factorization.

21232461250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21232461250 its reverse (5216423212), we get a palindrome (26448884462).

The spelling of 21232461250 in words is "twenty-one billion, two hundred thirty-two million, four hundred sixty-one thousand, two hundred fifty".